Push-button switch.



' M. H. SPIELMAN.

PUSH BUTTON SWITGH.

APPLICATION FILED SEPT. s, 1910.

9594,0481 Patented May 30, 1911.

@91 2 bfzgfi l? r I A a I g lgifnesses lii' TATS FATE MAX H. SPIELMAN,0F YORK, N. Y., ASSIGNOR T0 JOSEPH F. OBRIEN, OF NEW YORK, N. Y. I

PUSH-BUTTON SWITCH.

Specification of Letters Patent.

Patented May 30, 1911.

Application filed September 8, 1910. Serial No. 581,068.

Lb all whom it may concern:

Be it known that 1, MAX H. SPIELMAN, of the borough of Manhattan, city,county, and State of New York, have invented certain new and usefulImprovements in Push-Button Switches, of which the following is a fullfclear, and exact specification, such as will enable others skilled inthe art to which it appertains to make and use the same.

My invention relates to a push button switch for electric circuits,using a low tension current, such as call bells, lighting circuits andanalogous work.

The object of the invention is primarily construct a push button switchby which To this end my invention comprises oer-- tain features ofconstruction and combinations of parts which will be fully set forthhereinafter and particularly pointed outin the claims.

' Reference is now had to the accompanying drawings which represent, asan example, the preferred embodiment of the invention.

in these drawings-Figure 1 is a side elevation of the push buttonswitch; Fig. 2 is a section on the line 2-2 of Fig. 1 showing thecircuit broken; Fig. 3 is a similar view showing the circuit closed; andFig. 4 is a section on the line 4 1 of Fig. 3.

The switch has a face plate 10 with a barrel 11 projecting inward andadapted to he let into the wall or other part to which the switch isapplied. The barrel 11 contains an insulation frame 12 having orifices14 thcrcin in which are contained spring contacts 15 fastened tothcframe and adapted to he electrically connected to the terminals of thecircuit. The spring contacts 15 extend upward into the barrel 11 and areformed with hooks 16 on their ends. The barrel 11 is formed with twoopposite orifices 17 in which elbow levers 18 are mounted on fulcrums orpivots 19, formed by a ring let into an annular ori iioe 19 in thebarrel 11. 18 indicates a spring of ring form let into an annularrecircuit may be opened or closed by a Inocess 18 in the barrel 11, thespring serving to keep the levers 18 yieldingly in the position shown inFig. 2. The elbow levers have hooks 20 on one end which are respectivelydisposed opposite the hooks 16 and t 1e other ends of the elbow leversproject inward toward the flanged base 20' of the push button proper 21.

When the circuit is open the parts stand as in Fig. 2, the hooks 20being disengaged from and out of contact with the hooks 16-. Upondepressing the button 21 its flange 20 clears the upper ends of theelbow levers 18 and finally engages the inclined upper portion of thecontacts 15, causing their hooks 16 to engage the hooks 20. The partsthen assume the position shown in Fig. 3 and the circuit is closedthrough contacts 15, levers 18 and barrel 11. In this connection it willbe observed that the upper ends of the elbow levers 18 are now rockedinward and held in that position by the spring action of thecontactslfi. The flange 20' of the push button has an inclined upperside and as the push button moves back to the position shown in thedrawings this flange snaps past the elbow levers. Howevcr, upon againdepressing the button it this time engages the upper ends of the elbowlevers and depressing them moving the hooks 20 out of engagement withthe hooks 16 and allowing the contacts 15 to spring backward to theposition shown in Fig. 2 which is clear of the hooks and the circuit isbroken.

The button 21 is guided by a stem 22 which plays in the frame 12 andwhich is surrounded by a spring 23 serving yieldingly tohold the pushbutton raised as shown in Figs. 1 and 3. The manner of mounting thelevers 18. is important, since by reason of the ring-like spring 18 andpivot 19 the levers may be sprung into place in the barrel no rivetingor screwing being necessary.

llavingthus described my invention what I claim as new and desire tosecure by Letters Patent oi, the United States is:

l. A push button switch having engaging contacts and means for operatingthe same, said contacts changing their positions upon engagement witheach other, \vh'ercbythe operating means strikes one contact to closethe, circuit and the other contact to open the same.

2. A push button switch comprising two contacts adapted to engage eachother, one

of said contacts being in the form of an elbow lever and mounted tochange its position when engaged With the other contact and a means foroperating the contacts, whereby said other or second contact is en gagedby the operating means to close the circuit and the first named contactor elbow lever is engaged by the operating means to open or break thecircuit.

3. A push button switch having a spring contact with a ho0ked end, andelbow lever forming a second, contact, one of its arms having a hook toengage the hook of the spring contact and a button prope'r foreperatingthe contacts, said but-ton engaging the spring contact to close thecircuit through the elbow lever in the path of the button, whereby thesecond motion of the button engages the elbow lever and breaks or opensthe circuit.

5. A push button switch having a barrel with an interior annular groove,contact devices including a movable member and a ring-like pivot forsaid movable member sprung into and seated in said groove, and aring-like spring connected with said mov able member to actuate it andalso seated within the barrel.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

MAX H. SPIELMAN.

\Vitnesses F. C. MARTIN, B. BIGGE.

